Yarrow flower essence increases the potency of the Petites. It is also indicated to calm the onset of symptoms and reactions. Yarrow plant 's unique scent may help reduce over sensitivity in metabolism and immune competence. Read more about Yarrow and hundreds of other beneficial plants in Mother Nature's Herbal and Flowers that Heal. Add 2 drops to blends created with other Petites. Massage Yarrow Essence on the chest or wrist. 3 x daily. Lightly fragrant.